undergraduate thesis
The Effect of Mechanical Mixing, Temperature and Citrate Concentration on the Calcium Oxalate Precipitation

Silvija Šafranko (2016)
Sveučilište Josipa Jurja Strossmayera u Osijeku
Odjel za kemiju
Zavod za opću, anorgansku i fizikalnu kemiju i metodiku kemije
Metadata
TitleUtjecaj mehaničkog miješanja, temperature i koncentracije citrata na taloženje kalcijeva oksalata
AuthorSilvija Šafranko
Mentor(s)Berislav Marković (thesis advisor)
Anamarija Stanković (thesis advisor)
Abstract
Kalcijevi oksalati su kalcijeve soli oksalne kiseline i sastavni su dio gotovo svih bubrežnih kamenaca. Bubrežni kamenci posljedica su rasta kristala u urinarnom traktu, a gotovo 10% ljudi susretne se s tim problemom tijekom života. U medicinskom je rječniku proces nastajanja bubrežnih kamenaca poznatiji pod nazivom urolitijaza ili nefrolitijaza. Upravo se zbog te činjenice sve češće provode istraživanja kojima bi se u potpunosti objasnio mehanizam, uvjeti i moguća prevencija nastajanja bubrežnih kamenaca. Kalcijev oksalat kristalizira u tri hidratna oblika: termodinamički stabilan kalcijev oksalat monohidrat (vevelit, COM), metastabilan dihidrat (vedelit, COM) te trihidrat (kaoksit, COT) koji se rijetko pronalazi u kemijskom sastavu bubrežnih kamenaca. Eksperimentalno je pokazano da promjena temperature i koncentracije citrata može utjecati na taloženje kalcijeva oksalata te na morfologiju i veličinu nastalih kristala. Rezultati su obrađeni FTIR spektroskopijom, TG analizom i optičkom mikroskopijom.
Keywordscalcium oxalate dihydrate calcium oxalate monohydrate citrate kidney stones
Parallel title (English)The Effect of Mechanical Mixing, Temperature and Citrate Concentration on the Calcium Oxalate Precipitation
GranterSveučilište Josipa Jurja Strossmayera u Osijeku
Odjel za kemiju
Lower level organizational unitsZavod za opću, anorgansku i fizikalnu kemiju i metodiku kemije
PlaceOsijek
StateCroatia
Scientific field, discipline, subdisciplineNATURAL SCIENCES
Chemistry
Inorganic Chemistry
Study programme typeuniversity
Study levelundergraduate
Study programmeChemistry
Academic title abbreviationuniv. bacc. chem.
Genreundergraduate thesis
Language Croatian
Defense date2016-09-22
Parallel abstract (English)
Calcium oxalates are calcium salts of oxalic acid and they are the most common constituents of kidney stones. Kidney stones are the result of a crystal growth in the urinary tract and almost 10% of population experience such problems during their lifetime. Medical term of this process is known as the urolithiasis or nefrolithiasis. There have been many studies conducted with the aim to understand and explain the mechanism, precipitation conditions and possible prevention of the stone formation. Calcium oxalate crystallizes in three hydrate forms: thermodynamically stable monohydrate (whewellite, COM), the metastable modification, dihydrate (weddellite, COD) and trihydrate (caoxite, COT) which is rarely found in the kidney stones. The experimental results showed that a temperature changes and a concentration of citrate can influence morphology and size of precipitated crystals. Calcium oxalate crystals were studied by the means of thermal analysis (TGA) and infrared (FT-IR) spectroscopy. The morphology of calcium oxalate crystals was studied using the optical microscope.
Parallel keywords (Croatian)kalcijev oksalat dihidrat kalcijev oksalat monohidrat citrat bubrežni kamenci
Resource typetext
Access conditionOpen access
Terms of usehttp://rightsstatements.org/vocab/InC/1.0/
URN:NBNhttps://urn.nsk.hr/urn:nbn:hr:182:499408
CommitterSanda Hasenay